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I have a 650 Honda rincon four wheeler and the cooling fan does not come on. Any Ideas?

1. Check the Coolant Level: Ensure that your Honda Rincon has enough coolant. If the coolant is too low, the temperature sensor will not be properly submerged and will not trigger the fan to turn on. Ensure the coolant level is within the recommended range as specified in your owner's manual.

2. Inspect the Fan Fuse: Locate the fan fuse in the fuse box of your Rincon. Check if it's blown or damaged. If the fuse is blown, replace it with a new fuse of the same amperage rating. A blown fuse indicates a potential electrical fault that needs to be addressed.

3. Check the Wiring and Connectors: Inspect the wiring and connectors related to the cooling fan circuit for any loose connections, corrosion, or damage. Tighten loose connections and clean corroded terminals. Follow the wiring from the fan to the fan switch and ensure all connections are secure.

4. Test the Temperature Sensor: The temperature sensor detects the engine's temperature and sends a signal to the fan control module to activate the fan. To test the sensor, disconnect the wire connector and use a multimeter to check its resistance. Compare the measured resistance with the values provided in the service manual for your specific model.

5. Examine the Fan Motor: With the engine off and the key in the off position, manually rotate the fan blades to check if the motor is seized. If the blades don't move freely or are stuck, the fan motor may need to be replaced. Additionally, check the fan's electrical connector for a secure fit and clean any visible corrosion on the terminals.

6. Investigate the Fan Module: The fan module is responsible for controlling the operation of the cooling fan. Check the connections to the fan module, and inspect for any signs of damage or water intrusion. If the module is suspected to be faulty, testing or replacement may be necessary.

7. Test the Ground Circuit: Ensure that the ground circuit for the cooling fan is properly connected. A faulty ground can prevent the fan from receiving the necessary voltage to operate. Check the ground wire for continuity between the battery's negative terminal and the engine block.

If none of the above solutions resolve the issue and the cooling fan still does not come on, it's recommended to seek assistance from an authorized Honda dealer or a qualified mechanic who can perform a more comprehensive diagnosis and repair.